At least 50% of the time on SO, the best answer is 3rd or worse, and I'm always thinking, "Why is this not the top answer?"
Usually the most superficial, not that it's always a bad thing.
Oh, also on SO there's this kind of exchange:
Q: "I want to do X because of this and that - or because I simply fucking want to".
A: You should never do X, do Y or Z instead.